Legitimate Interest Assessment
ZEAL IO LIMITED
LEGITIMATE INTEREST ASSESSMENT
Free Tier Value-Added Services
REVISION NOTES (Version 1.1)
This revised version incorporates critical updates following comprehensive legal review of Zeal's PSP Authorization Agreement, Merchant Terms of Service, and Data Processing Addendum completed in January 2026:
- Section 9.1.1: Terminal screen notifications replaced with email-based notification mechanism (terminal notifications not technically feasible; email provides superior transparency)
- Section 6.5.1: Updated merchant opt-out mechanisms to align with PSP Agreement Section 7.1(f) (dedicated opt-out portal at getzeal.io/optout, optout@getzeal.io email address)
- Section 6.5.2: Updated opt-out processing timeline to align with PSP Agreement Section 7.1(f)(iv) (5 Business Days to cease collection, 30 days to delete data)
- Section 7.5.2: Updated consumer contact details (primary contact: privacy@getzeal.io, secondary: dpo@getzeal.io)
- Section 9.1.2: Distinguished Free Tier (recommended signage) vs Paid Tier (mandatory consumer signage per Merchant ToS and PSP Agreement Section 8.5)
- Section 9.1.3: Added cross-merchant identification Privacy Policy disclosure requirements for Paid Tier services
- Section 9.2.3: Clarified Free Tier (no cross-merchant tracking, covered by this LIA) vs Paid Tier cross-merchant identification (consumer consent-based, NOT covered by this LIA)
- Section 10.2: Updated conditions for validity to reflect email notification requirement and Joint Controller Arrangement Notice publication requirement
1. EXECUTIVE SUMMARY
1.1 Purpose of This Assessment
This Legitimate Interest Assessment (LIA) evaluates whether Zeal IO Limited ('Zeal') may lawfully rely on the legitimate interests legal basis under Article 6(1)(f) of the UK General Data Protection Regulation (UK GDPR) for processing personal data in connection with its Free Tier Value-Added Services.
The assessment follows the three-part test established by the Information Commissioner's Office (ICO) and addresses the specific challenges arising from Zeal's B2B2C deployment model, where services are deployed via Payment Service Providers (PSPs) and ZMS Controllers rather than through direct merchant engagement.
1.2 Scope of Processing Activities
This LIA covers all personal data processing activities associated with Free Tier Services, specifically:
- Transaction Data Analytics: Processing of transaction amounts, dates, times, and merchant category codes to generate business performance insights for merchants
- Token-Based Consumer Recognition: Processing of payment card tokens (not PANs) to identify new versus returning customers for merchant analytics
- Terminal-Based Reporting: Display of transaction summaries and business insights on payment terminal screens
- Aggregated Analytics Generation: Creation of anonymised benchmarking data from transaction patterns across the merchant network
1.3 Assessment Conclusion
This assessment concludes that Zeal may rely on legitimate interests as the lawful basis for Free Tier processing, subject to implementation of the transparency mechanisms and safeguards detailed in Section 9. The legitimate interests of merchants in understanding their business performance, combined with Zeal's commercial interest in demonstrating platform value, are not overridden by the rights and freedoms of data subjects when appropriate safeguards are in place.
1.4 Key Findings Summary
2. LEGAL FRAMEWORK AND REGULATORY CONTEXT
2.1 Applicable Legal Provisions
2.1.1 UK GDPR Article 6(1)(f)
Article 6(1)(f) of the UK GDPR provides that processing is lawful where:
This legal basis requires a three-part assessment: (1) identification of a legitimate interest; (2) demonstration that processing is necessary for that interest; and (3) a balancing test weighing the interest against data subject rights.
2.1.2 ICO Guidance on Legitimate Interests
The ICO's guidance on legitimate interests establishes that controllers must:
- Identify a specific legitimate interest (not merely a lawful or beneficial purpose)
- Demonstrate that processing is genuinely necessary (not merely convenient)
- Consider whether data subjects would reasonably expect the processing
- Implement appropriate safeguards to mitigate any identified risks
- Provide an easy and effective opt-out mechanism
2.1.3 Recital 47 - B2B Processing
Recital 47 of the UK GDPR provides specific support for B2B processing scenarios:
While this recital specifically addresses marketing and fraud prevention, the underlying principle - that business-to-business processing serving genuine commercial purposes may constitute a legitimate interest - supports the processing activities assessed in this LIA.
2.2 Regulatory Enforcement Context
2.2.1 ICO Enforcement Trends (2024-2025)
Recent ICO enforcement actions provide context for assessing legitimate interest claims:
2.2.2 Reasonable Expectations Test
The ICO's 'reasonable expectations' test is central to legitimate interest assessments. Data subjects are more likely to have their interests overridden where:
- They would not reasonably expect the processing
- They have no direct relationship with the controller
- Processing occurs 'invisibly' without their knowledge
- They have no practical opportunity to objectThis assessment addresses each of these factors in relation to both merchant and consumer data subjects.
3. DESCRIPTION OF PROCESSING ACTIVITIES
3.1 Overview of Free Tier Services
Zeal's Free Tier Services provide merchants with transaction analytics and business insights delivered through their existing payment terminals. These services are deployed without charge to demonstrate platform value and encourage upgrade to Paid Tier Services.
3.1.1 Service Components
3.1.2 Technical Architecture
Free Tier Services operate through the following technical flow:
- Zeal Software installed on payment terminal via PSP/ZMS Controller authorisation
- Transaction data observed post-authorisation (after payment completion)
- Token (not PAN) extracted for consumer identification purposes
- Transaction metadata transmitted to Zeal Platform via encrypted channel
- Analytics generated and displayed on terminal screen
- Aggregated/anonymised data retained for benchmarking; identifiable data retained per retention schedule
3.2 Personal Data Categories
3.2.1 Merchant Data
3.2.2 Transaction Data
3.2.3 Consumer Data
The only consumer-related data processed is the payment card token, which:
- Is a surrogate value that cannot be reversed to obtain the PAN
- Is used solely to identify repeat visits (new vs returning customer analytics)
- Cannot be used to identify the consumer's name, address, or contact details
- Is not shared with merchants in identifiable form
3.3 Data Subjects
This LIA addresses the interests of the following categories of data subjects:
3.4 The B2B2C Deployment Model
3.4.1 How Deployment Works
Zeal's Free Tier Services are deployed through a B2B2C (Business-to-Business-to-Consumer) model:
- PSP Authorisation: A Payment Service Provider executes a PSP Authorisation Agreement with Zeal, granting Zeal permission to deploy software on terminals within the PSP's merchant network
- ZMS Controller Deployment: Where applicable, a ZMS Controller (terminal management company) uploads merchant data and facilitates software deployment
- Merchant Deployment: Zeal Software is installed on terminals at merchant locations, often as part of a broader terminal software update
- Consumer Interaction: Consumers transact at terminals where Zeal Software observes transaction data
3.4.2 Legal Basis Chain
4. PURPOSE TEST: IDENTIFYING LEGITIMATE INTERESTS
4.1 Framework for the Purpose Test
The first limb of the legitimate interest test requires identification of a specific, real, and genuine legitimate interest. The ICO guidance indicates that a legitimate interest must be:
- Lawful (not contrary to any law)
- Clearly articulated (not vague or speculative)
- Real and present (not hypothetical)
- Beneficial to the controller, data subject, or third party
4.2 Zeal's Legitimate Interests
4.2.1 Primary Interest: Demonstrating Platform Value
Zeal has a legitimate commercial interest in:
This interest is:
- Lawful: There is no law prohibiting the provision of free analytics services
- Clearly articulated: The interest is specific (convert free users to paid) and measurable
- Real and present: Zeal's business model depends on demonstrating platform value
- Beneficial: Creates value for Zeal (revenue) and merchants (free analytics)
4.2.2 Secondary Interest: Building Network Effects
Legitimate Interest #2 Building a comprehensive dataset of aggregated, anonymised transaction patterns to improve analytics quality and generate industry benchmarks that benefit all platform participants.
This interest supports Zeal's long-term business sustainability by creating network effects where more data improves service quality for all participants.
4.3 Third-Party Legitimate Interests
4.3.1 Merchant Interest: Understanding Business Performance
Third-Party Legitimate Interest #1 (Merchants) Merchants have a legitimate interest in understanding their business performance through analytics derived from their own transaction data. This includes understanding customer patterns, peak trading periods, average transaction values, and comparative performance.
This interest is central to the legitimate interest justification because:
- Transaction data is the merchant's own operational data - they have a natural interest in understanding it
- Business intelligence is a standard commercial practice in retail and hospitality sectors
- Analytics help merchants make better business decisions (staffing, inventory, marketing)
- Free access to analytics that would otherwise require expensive software or consultancy
4.3.2 PSP Interest: Enhancing Merchant Relationships
Third-Party Legitimate Interest #2 (PSPs) Payment Service Providers have a legitimate interest in enhancing their service offering to merchants, reducing merchant churn, and generating new revenue streams through value-added services partnerships.
PSPs increasingly compete on service quality rather than price alone. Offering analytics services through partners like Zeal helps PSPs differentiate their offering and strengthen merchant relationships.
4.4 Purpose Test Outcome
5. NECESSITY TEST: IS PROCESSING NECESSARY?
5.1 Framework for the Necessity Test
The second limb of the legitimate interest test requires demonstration that the processing is 'necessary' for the identified purpose. The ICO guidance clarifies that 'necessary' means more than merely convenient but does not require that processing be absolutely essential. The test is whether processing is a reasonable and proportionate way to achieve the identified interest.
Key questions in the necessity test include:
- Is there a less intrusive way to achieve the same purpose?
- Is the scope of processing proportionate to the purpose?
- Is processing the minimum required to achieve the purpose?
5.2 Assessment by Data Element
5.2.1 Transaction Amounts
5.2.2 Transaction Dates and Times
5.2.3 Payment Card Tokens
Additional justification for token processing:
- Tokens are pseudonymised identifiers - they cannot be reversed to obtain the PAN
- Zeal cannot use tokens to identify consumer names, addresses, or contact details
- Tokens are used solely to generate aggregate metrics (e.g., '35% returning customers')
- Individual token-level data is not shared with merchants - only percentages and trends
- Token processing represents standard practice in retail analytics (Square, Stripe, SumUp all offer similar features)
5.2.4 Merchant Contact Details
5.3 Consideration of Alternatives
5.3.1 Alternative: Consent-Based Processing
Could Zeal rely on consent instead of legitimate interest?
Conclusion: Consent is not a viable alternative to legitimate interest for Free Tier Services.
5.3.2 Alternative: Contract-Based Processing
Could Zeal rely on contract performance as the legal basis?
Conclusion: Contract is not a viable alternative as there is no direct contract with the relevant data subjects (merchants and consumers).
5.3.3 Alternative: Anonymised-Only Processing
Could Zeal achieve its purposes using only anonymised data?
Conclusion: Fully anonymised processing would not achieve any of the identified legitimate interests. The processing Zeal conducts is already the minimum necessary.
5.4 Necessity Test Outcome
6. BALANCING TEST: MERCHANT DATA SUBJECTS
6.1 Framework for Balancing
The third limb of the legitimate interest test requires balancing the identified interests against the rights and freedoms of data subjects. This section assesses the balance in relation to merchant data subjects (specifically, merchant representatives whose business contact details are processed).
The balancing test considers:
- Nature and source of the relevant interest and the impact on the data subject
- Reasonable expectations of the data subject
- Status of the data subject (vulnerable individuals, children)
- Whether an opt-out mechanism is available
- What safeguards can mitigate any negative impact
6.2 Nature of Processing and Impact
6.2.1 Type of Data Processed
For merchant data subjects, Zeal processes:
- Business contact details (email, phone): Used for service notifications and support
- Business identifiers (MID, TID): Used to attribute analytics to correct business
- Transaction data: Merchant's own operational data, processed for merchant benefitThis is business-context data, not sensitive personal information. The merchant representatives are data subjects in their professional capacity only.
6.2.2 Impact Assessment
6.3 Reasonable Expectations
6.3.1 What Would Merchants Reasonably Expect?
Assessment of merchant expectations:
✓ OUTCOME: Merchants would reasonably expect their transaction data to be used for analytics purposes, particularly when such analytics are provided for their benefit at no cost.
6.3.2 B2B2C Model Considerations
⚠ IMPORTANT: The B2B2C deployment model creates a gap between expectations and reality: merchants receive Zeal services without actively choosing them. However, this is mitigated by: (1) the beneficial nature of the service; (2) the low-risk nature of the data; (3) the robust opt-out mechanism.
The key question is whether merchants would object to receiving free analytics services. The evidence suggests they would not:
- Free Tier conversion rates demonstrate merchant appreciation of analytics value
- Low opt-out rates indicate merchant acceptance of the service
- Competitor services (Square Capital analytics, Stripe Radar insights) operate similarly
6.4 Data Subject Status
Merchant representatives are:
- Adults acting in professional/business capacity
- Not in a vulnerable position relative to Zeal
- Sophisticated business users who understand transaction data
- Able to exercise opt-out rights effectivelyNo special protection considerations apply.
6.5 Opt-Out Mechanism
6.5.1 Merchant Opt-Out Options
Merchants may opt out of Zeal Free Tier Services through multiple mechanisms per PSP Authorization Agreement Section 7.1(f):
- Direct Opt-Out Portal
- URL: https://getzeal.io/optout
- Mechanism: Web form with MID/TID lookup
- Process: Merchant enters Terminal ID or Merchant ID, submits request
- Confirmation: Email acknowledgment within 2 Business Days
- Email Request
- Dedicated opt-out email: optout@getzeal.io
- Subject line: "Merchant Opt-Out Request"
- Required info: Business name, MID/TID, contact email
- Confirmation: Email acknowledgment within 2 Business Days
- PSP Request
- Contact: Merchant contacts their PSP/acquirer to request Zeal opt-out
- PSP obligation: PSP must notify Zeal within 5 Business Days (per PSP Agreement Section 7.1(f)(vi))
- Zeal processing: Same timeline as direct requests
6.5.2 Opt-Out Processing
When a merchant submits an opt-out request via any mechanism in Section 6.5.1, Zeal processes as follows per PSP Agreement Section 7.1(f)(iv):
Key Points:
✓ 5-Day Opt-Out: The 5 Business Day opt-out processing timeline (faster than 30-day standard) demonstrates Zeal's commitment to merchant choice
✓ 30 days to delete data: Standard under UK GDPR Article 17
✓ Clear communication at each stage: Merchant always informed
✓ Payment processing completely unaffected: Zeal is separate from payment authorization
✓ Records maintained: Zeal logs all opt-out requests, processing dates, and completion confirmations for audit purposes (retention: Agreement duration + 6 years)
6.6 Safeguards
The following safeguards protect merchant interests:
- Transparency: Privacy notices explain Zeal's data processing
- Data minimisation: Only business-context data processed
- Security: Technical measures per DPA Annex 2 (encryption, access controls, monitoring)
- Retention limits: Data retained only as long as necessary
- No external sharing: Merchant data not shared with third parties for marketing
- Non-competition covenant: Zeal contractually prohibited from using data to compete with PSPs
6.7 Merchant Balancing Outcome
7. BALANCING TEST: CONSUMER DATA SUBJECTS
7.1 Special Considerations for Consumers
Consumer data subjects require separate analysis because:
- They have no direct relationship with Zeal
- They may not be aware that Zeal processes any data about them
- They have no practical opportunity to object before processing
- They may include individuals acting in personal capacity (not business)These factors create a higher bar for legitimate interest justification.
7.2 Nature of Consumer Data Processing
7.2.1 What Consumer Data Is Processed
🔴 CRITICAL Zeal processes ONLY payment card tokens for consumer-related analytics. No consumer names, addresses, contact details, or other directly identifying information is processed.
Token characteristics:
- Pseudonymised: Token is a surrogate value that replaces the PAN
- Non-reversible: Zeal cannot derive the PAN from the token
- Non-identifying: Zeal cannot use the token to identify consumer name or contact details
- Limited linkability: Token links transactions at the same merchant only (cross-merchant linking not performed for Free Tier)
7.2.2 Purpose of Token Processing
Tokens are processed solely to:
- Calculate new vs returning customer percentages for merchant analytics
- Generate customer visit frequency distributions
- Identify patterns in repeat customer behaviour (aggregate level)Individual token-level data is NOT shared with merchants. Merchants receive only aggregate statistics (e.g., '35% returning customers', 'average visit frequency 2.3x per month').
7.3 Impact Assessment for Consumers
7.4 Reasonable Expectations of Consumers
7.4.1 What Would Consumers Expect?
Assessment of consumer expectations:
⚠ IMPORTANT: The 'invisible processing' concern is the primary challenge for consumer legitimate interest. Consumers transacting at a terminal would not necessarily expect Zeal (as opposed to the merchant or their bank) to observe the transaction.
7.4.2 Mitigating the Expectations Gap
The expectations gap is mitigated by:
- Data Minimisation: Only pseudonymised tokens processed - no identifying information
- Aggregate Use Only: Individual consumer data not used for marketing, decisions, or profiling
- Merchant Benefit: Processing serves to help the merchant understand their business - indirect consumer benefit through better service
- Transparency Measures: Terminal notification, merchant signage, privacy policy disclosure (see Section 9)
- Industry Standard: Similar processing occurs across payment ecosystem (Square, Stripe, SumUp, Toast)
7.5 Consumer Opt-Out Considerations
7.5.1 Practical Challenges
Consumer opt-out presents practical challenges:
- No direct relationship: Zeal has no way to identify or contact individual consumers
- Transaction flow: Interrupting payment for opt-out request would be disruptive
- Token-based: Cannot exclude specific tokens without identifying the consumer
7.5.2 Available Consumer Rights
Despite practical challenges in providing consumer opt-out for Free Tier Services (no direct relationship with consumers, token-based processing), consumers may exercise their UK GDPR rights:
Contact Zeal's Privacy Team:
- Primary contact: privacy@getzeal.io (for all data subject requests, access, deletion, information requests)
- Post: Zeal IO Limited, Data Protection Officer, 85 Great Portland Street, First Floor, London, W1W 7LT, UKContact Zeal's DPO (escalation):
- Email: dpo@getzeal.io (for complaints about data processing, escalation of unresolved requests)Available Rights:
✓ Right to Information (Article 13/14): Request information about what data Zeal processes about them (though Free Tier processes only pseudonymised tokens, not identifiable consumer data)
✓ Right to Access (Article 15): Request confirmation of whether Zeal holds any identifiable data about them (Zeal will confirm that Free Tier processes only tokens which cannot identify individuals)
✓ Right to Erasure (Article 17): Request deletion of any identifiable data (requires consumer to identify themselves and provide evidence linking them to specific token - technically challenging but Zeal will process in good faith)
7.5.3 Why Limited Opt-Out Is Acceptable
The limited consumer opt-out is acceptable because:
- Processing is minimal (pseudonymised tokens only)
- Impact on consumers is negligible (no individual decisions or marketing)
- Alternative payment methods remain available (cash)
- Data subject rights (access, erasure) remain exercisable via DPO
- Processing benefits society through better merchant services
7.6 Consumer Status Considerations
Consumer status assessment:
- Adults: Most consumers transacting at payment terminals are adults
- Children: Possible that some transactions involve children's cards or children making purchases
- Vulnerable individuals: No way to identify vulnerability from token alone
7.6.1 Child Data Protection
Article 6(1)(f) requires 'particular' protection for children. Zeal's processing is low-risk for children because:
- No age-based profiling or targeting occurs
- No marketing to individual consumers (including children)
- No decisions made about individual children
- Token processing is age-agnostic
- Aggregate statistics do not identify or affect individual children
7.7 Safeguards for Consumers
The following safeguards specifically protect consumer interests:
7.8 Consumer Balancing Outcome
8. ICO GUIDANCE COMPLIANCE ANALYSIS
8.1 ICO Three-Part Test Summary
8.2 ICO Checklist: Can We Apply Legitimate Interests?
The ICO provides a checklist for assessing legitimate interests. Below is Zeal's self-assessment:
8.2.1 Purpose Test Checklist
8.2.2 Necessity Test Checklist
8.2.3 Balancing Test Checklist
8.3 ICO Sector-Specific Considerations
8.3.1 Financial Services Context
The ICO's approach to financial services data processing acknowledges:
- Transaction data processing is inherent to payment services
- Fraud prevention and analytics are recognised legitimate interests
- B2B data processing in financial services carries lower risk than consumer-focused processingZeal's processing aligns with these sector norms while implementing additional safeguards.
8.3.2 Retail Analytics Context
The retail analytics industry operates on similar data processing models:
- Footfall analytics (video-based counting): Processes more intrusive data than Zeal
- Wi-Fi analytics: Tracks device identifiers with less pseudonymisation than Zeal
- Loyalty card analytics: Collects more personal information than Zeal's token-based approachZeal's processing is less intrusive than many established retail analytics practices.
9. MANDATORY SAFEGUARDS AND IMPLEMENTATION REQUIREMENTS
🔴 CRITICAL This section sets out the safeguards that MUST be implemented to support the legitimate interest legal basis. Failure to implement these safeguards may invalidate the legitimate interest claim.
9.1 Transparency Requirements
9.1.1 Merchant Email Notification (MANDATORY)
🔴 CRITICAL This section sets out the PRIMARY transparency safeguard supporting the legitimate interest legal basis. Failure to implement email notification as specified will INVALIDATE the legitimate interest claim.
Technical Context:
Terminal screen notifications (as specified in LIA v1.0) are NOT technically feasible given Zeal's deployment architecture. Zeal Software operates as background middleware on payment terminals and cannot control terminal UI during idle periods without:
- Displacing PSP/acquirer branding and notifications (contractually prohibited)
- Interfering with merchant-facing terminal apps (e.g., till systems, inventory management)
- Requiring custom terminal hardware/software configurations (not scalable across diverse terminal estate)However, email-based notification is SUPERIOR to terminal screen displays for transparency purposes because it provides a permanent record, enables merchant response/opt-out, and reaches the business decision-maker directly.
Requirement: 24-Hour Email Notification to Merchants
To address the ICO's 'invisible processing' concern and provide merchants with genuine opportunity to object under Article 21 UK GDPR, Zeal MUST implement email-based notification per PSP Authorization Agreement Section 7.1(f):
Email Delivery Requirements:
Mandatory Email Content:
✓ Clear identification of Zeal as the service provider
✓ Explanation of what services have been activated (Free Tier analytics)
✓ Description of what data is collected (transaction amounts, times, card tokens)
✓ Purpose of data processing (business analytics for merchant benefit)
✓ Prominent opt-out instructions with direct link to getzeal.io/optout
✓ Contact information for questions (support@getzeal.io)
✓ Link to full Privacy Policy (getzeal.io/privacy)
✓ Statement that payment processing is unaffected
✓ 30-day window to opt out before processing begins (or confirmation that merchant can opt out at any time with 5 Business Day processing)
Why Email Notification is Superior to Terminal Notifications:
9.1.2 Point-of-Sale Consumer Privacy Signage
Requirement Distinction: Free Tier vs Paid Tier
The signage requirements differ significantly between Free Tier (merchant analytics only) and Paid Tier (consumer-facing loyalty programs):
For FREE TIER Services (Merchant Analytics Only):
Status: RECOMMENDED (not mandatory)
Rationale: Free Tier processes only pseudonymised payment card tokens for aggregate analytics. Consumers are not directly impacted (no marketing, no profiling, no individual decisions). Article 13 UK GDPR requires privacy information to be provided to data subjects, but the minimal and pseudonymised nature of Free Tier processing means consumer-facing signage is recommended best practice rather than legal necessity.
Recommended Implementation:
- Zeal provides free template signage to PSPs for distribution to Free Tier merchants
- Template text: "This terminal uses Zeal for business analytics. Privacy: getzeal.io/privacy"
- Formats: Printable PDF (A5 counter sign, window sticker)
- Distribution: PSP includes in merchant onboarding materials or terminal deployment kits
- Merchant discretion: Merchants may choose to display or not display (Zeal encourages but does not mandate)For PAID TIER Services (Consumer Loyalty Programs):
Status: MANDATORY (per Merchant Terms of Service Section 8.3 and PSP Agreement Section 8.5)
Rationale: Paid Tier services involve consumer-facing loyalty programs where consumers actively provide personal data (phone numbers) and receive marketing communications. This requires explicit consumer-facing transparency under both UK GDPR Article 13 and PECR.
Mandatory Implementation:
- Merchants MUST display Zeal-provided signage at point of sale
- Signage MUST be visible to consumers before they enter phone number
- Signage MUST include: Zeal branding, data collection statement, privacy policy link, opt-out information
- Zeal provides signage in multiple formats: counter cards, window decals, terminal stickers
- Compliance verified: Zeal may audit merchant signage compliance
9.1.3 Privacy Policy Requirements (MANDATORY)
Zeal's Privacy Policy must clearly disclose:
- That Zeal processes transaction data from payment terminals
- The categories of data collected (transaction amounts, times, tokens)
- The purposes of processing (analytics, new vs returning analysis)
- The legal basis (legitimate interest with reference to this LIA)
- Data subject rights and how to exercise them
- Contact details for the DPOAdditional Privacy Policy Disclosures (MANDATORY for Paid Tier Services):
For Paid Tier Services involving cross-merchant consumer identification, Zeal's Consumer Privacy Policy (getzeal.io/privacy) MUST disclose:
✓ Cross-Merchant Recognition: That consumers who provide phone numbers will be recognized across multiple Zeal-powered merchants (not just the merchant where they first enrolled)
✓ Card Token Linkage: That payment card tokens are linked to phone numbers to create a unified consumer identity for cross-merchant loyalty program participation
✓ Independent Controller Status: That Zeal acts as INDEPENDENT controller (not joint controller) for the cross-merchant identification infrastructure, based on consumer consent (Article 6(1)(a) UK GDPR) obtained at the point of phone number entry
✓ Merchant Data Separation: That each merchant's loyalty program operates independently - Merchant A cannot see transaction data or loyalty data from Merchant B (data sharing prohibited unless consumer consents to specific cross-promotional campaign)
✓ Consumer Control Mechanisms: That consumers can manage cross-merchant identification at getzeal.io/account, including: viewing all linked loyalty programs, unlinking card tokens, deleting phone number linkage, deleting entire Zeal account (removes from all programs)
9.2 Data Minimisation Requirements
9.2.1 Token-Only Processing (MANDATORY)
Requirement: No PAN Processing Zeal must NOT process Primary Account Numbers (PANs) for Free Tier Services. Only tokens may be processed for consumer recognition purposes. This requirement must be technically enforced at the terminal software level.
Technical implementation:
- Terminal software must extract tokens, not PANs, from transaction data
- Technical controls must prevent PAN transmission to Zeal Platform
- Regular audits must verify no PAN storage in Zeal systems
9.2.2 Aggregate Reporting Only (MANDATORY)
Requirement: No Individual-Level Consumer Data Sharing Zeal must NOT share individual consumer token data with merchants. Merchants may receive only aggregate statistics (percentages, distributions, trends). This requirement must be enforced in all reporting and dashboard functionality.
9.2.3 No Cross-Merchant Tracking for Free Tier (MANDATORY)
Requirement: Merchant-Scoped Token Processing for Free Tier For FREE TIER SERVICES (covered by this LIA): Zeal MUST NOT link payment card tokens across different merchants to build cross-merchant consumer profiles. Token-based recognition MUST be scoped to individual merchant level only.
Technical Implementation:
- Token processing isolated per Merchant ID (MID)
- Database queries scoped to single merchant (cannot join across merchant tables)
- Analytics calculations performed per merchant independently
- 'New vs. returning customer' metric applies ONLY to visits at same merchant (not across merchant network)Why This Matters for Legitimate Interest:
- Cross-merchant tracking would significantly increase consumer privacy impact
- Consumers would not reasonably expect their transactions at Merchant A to inform analytics at Merchant B
- Cross-merchant profiling would require stronger lawful basis (consent, not legitimate interest)
- This limitation keeps Free Tier processing proportionate and within reasonable expectationsFor PAID TIER Services (NOT covered by this LIA):
Cross-merchant identification IS permitted for Paid Tier services, but operates under CONSUMER CONSENT (Article 6(1)(a) UK GDPR), not legitimate interest. When consumers provide their phone number to join a loyalty program, they consent to cross-merchant recognition. This consent-based processing is documented separately in Zeal's Consumer Privacy Policy and DPA Section 2.3(a), and is NOT covered by this Legitimate Interest Assessment.
9.3 Security Requirements
9.3.1 Technical Security Measures (MANDATORY)
The following security measures must be implemented and maintained:
9.3.2 Organisational Security Measures (MANDATORY)
The following organisational measures must be implemented:
- Security awareness training for all staff (annual minimum)
- Background checks for personnel with access to personal data
- Confidentiality agreements for all staff and contractors
- Prompt access revocation upon termination
9.4 Data Subject Rights
9.4.1 Merchant Rights (MANDATORY)
Zeal must provide merchants with effective mechanisms to exercise their UK GDPR rights:
Key Implementation Points:
✓ 5-Day Opt-Out: The 5 Business Day opt-out processing timeline (faster than 30-day standard) demonstrates Zeal's commitment to merchant choice and strengthens legitimate interest position
✓ Free Exercise: All rights exercisable at no cost to merchants (UK GDPR Article 12(5) - no fees unless requests manifestly unfounded or excessive)
✓ Clear Communication: All responses provided in plain language (not legal jargon), with explanations of any retention requirements or limitations
9.4.2 Consumer Rights (MANDATORY)
Zeal must provide consumers with mechanisms to exercise:
- Right to access: Confirmation of what data (if any) is held
- Right to erasure: Deletion of token data upon identification verification
- Right to information: Explanation of processing activitiesConsumer rights requests must be directed to privacy@getzeal.io (primary) or dpo@getzeal.io (escalation) and responded to within statutory timeframes.
9.5 Retention Limits
9.5.1 Data Retention Schedule (MANDATORY)
9.6 Ongoing Compliance
9.6.1 Annual Review (MANDATORY)
This LIA must be reviewed at least annually or upon:
- Material change to processing activities
- New ICO guidance or enforcement action affecting the assessment
- Significant complaint or objection from data subjects
- Changes to the B2B2C deployment model
9.6.2 Monitoring and Documentation (MANDATORY)
Zeal must maintain documentation of:
- Merchant opt-out requests and processing
- Consumer data subject requests and responses
- Complaints relating to Free Tier data processing
- Security incidents affecting Free Tier data
- Changes to safeguard implementation
10. CONCLUSION AND APPROVAL
10.1 Assessment Summary
This Legitimate Interest Assessment has evaluated Zeal IO Limited's reliance on Article 6(1)(f) of the UK GDPR for processing personal data in connection with Free Tier Value-Added Services.
10.1.1 Test Results
10.1.2 Overall Conclusion
✓ OUTCOME: LEGITIMATE INTEREST BASIS: VALID Zeal may rely on legitimate interests as the lawful basis for Free Tier personal data processing, subject to implementation of all mandatory safeguards specified in Section 9, including email notification to merchants within 24 hours of deployment.
10.2 Conditions for Validity
This LIA is valid and Zeal may rely on legitimate interest as lawful basis for Free Tier processing ONLY IF Zeal:
- ✅ Implements email notification within 24 hours of deployment as specified in Section 9.1.1 (NOT terminal screen notifications - technically not feasible)
- ✅ Maintains Privacy Policy disclosures meeting requirements in Section 9.1.3, including: Free Tier processing explanation and lawful basis disclosure, link to this LIA at getzeal.io/legal/lia-free-tier, for Paid Tier: cross-merchant identification disclosures
- ✅ Processes only tokens (NOT PANs) for consumer recognition as specified in Section 9.2.1
- ✅ Shares only aggregate statistics (NOT individual consumer data) with merchants as specified in Section 9.2.2
- ✅ Does NOT perform cross-merchant token linking for Free Tier services as specified in Section 9.2.3
- ✅ Implements and maintains security measures as specified in Section 9.3
- ✅ Provides effective data subject rights mechanisms as specified in Section 9.4
- ✅ Adheres to retention limits as specified in Section 9.5
- ✅ Reviews this LIA annually and upon material change as specified in Section 9.6
- ✅ Publishes Joint Controller Arrangement Notice (Section 3.3) on Privacy Policy page for consumer data processing
10.3 Risk Acknowledgement
⚠ IMPORTANT: This LIA reflects Zeal's good faith assessment of the legitimate interest legal basis. The ICO retains authority to determine whether legitimate interest is appropriate in specific circumstances. Zeal should monitor ICO guidance and enforcement actions and update this assessment as necessary.
10.4 Approval
APPENDIX A: REGULATORY REFERENCE MATERIALS
A.1 UK GDPR Provisions
- Article 6(1)(f): Legitimate Interests
- Article 13: Information to be provided where personal data are collected from the data subject
- Article 14: Information to be provided where personal data have not been obtained from the data subject
- Article 21: Right to object
- Recital 47: Legitimate interests balancing
- Recital 69: Data minimisation
A.2 ICO Guidance Documents
- ICO Guide to the UK General Data Protection Regulation (UK GDPR)
- ICO Legitimate Interests Guidance
- ICO Lawful Basis Interactive Guidance Tool
- ICO Direct Marketing Guidance
- ICO Anonymisation Guidance
A.3 Relevant Case Law and Enforcement
- Fashion ID (CJEU C-40/17): Joint controller considerations
- Google Spain (CJEU C-131/12): Balancing test principles
- Rigas (CJEU C-13/16): Legitimate interest scope
- ICO v Experian (2020): B2B2C transparency requirements
APPENDIX B: PROCESSING ACTIVITIES REGISTER EXTRACT
B.1 Free Tier Processing Activities
B.2 Data Flow Summary
Terminal → Zeal Platform → Analytics Engine → Terminal Display / Aggregation Store
APPENDIX C: COMPARATIVE MARKET ANALYSIS
C.1 Competitor Processing Comparison
Zeal's processing is comparable to or less intrusive than industry competitors, supporting the reasonableness of the legitimate interest claim.
APPENDIX D: FREE TIER ACTIVATION EMAIL TEMPLATE
This appendix provides the mandatory email template for Free Tier activation notifications per Section 9.1.1. This template must be used for all Free Tier deployments (customization permitted only for PSP name, merchant details, and PSP contact information).
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